One pascal is exactly 1.450377377e-07 kilopounds per square inch, so converting pascals to kilopounds per square inch is a single multiplication. Enter any figure and the result appears as you type — the arithmetic runs in your browser, so nothing is sent anywhere.
The SI unit: one newton per square metre. One thousand psi; the unit US steel and alloy strengths are quoted in.
Gauge versus absolute. A tyre gauge reading 32 psi means 32 psi above atmospheric, which is about 46.7 psi absolute. Converting the number is straightforward; remembering which zero it was measured from is where the mistakes happen. N/mm² and MPa are the same size, so a drawing quoting either is quoting the same stress. Below the calculator there is a step table for the values people look up most, and a second table putting real pressure figures into kilopounds per square inch so the number you get has something to be compared against.
The formula
pascals- The amount you are converting, in pascals
1.4503773773e-07- The exact number of kilopounds per square inch in one pascal
kilopounds per square inch- The converted result
How it works, step by step
- Enter the value in pascals.
- It is multiplied by 1.4503773773e-07, the exact factor between the two units.
- The answer is shown in kilopounds per square inch, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A bicycle tyre: 6.21e+05 Pa in kilopounds per square inch
A bicycle tyre comes to about 6.21e+05 Pa. Multiplying by the factor: 6.21e+05 × 1.45038e-07 = 0.0900684 ksi. Dividing the answer back by 1.45038e-07 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
A domestic water main: 4e+05 Pa in kilopounds per square inch
A domestic water main comes to about 4e+05 Pa. Multiplying by the factor: 4e+05 × 1.45038e-07 = 0.0580151 ksi. Dividing the answer back by 1.45038e-07 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
How to read your score
Frequently asked questions
How many kilopounds per square inch are in one pascal?
Exactly 1.4503773773e-07. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert pascals to kilopounds per square inch?
kilopounds per square inch = pascals × 1.4503773773e-07. Reversed, pascals = kilopounds per square inch ÷ 1.4503773773e-07, which is the same as multiplying by 6,894,757.29317.
Which is the bigger unit, the pascal or the kilopound per square inch?
The kilopound per square inch. One pascal is only 1.45038e-07 of a kilopound per square inch, so it takes 6.89476e+06 pascals to make one kilopound per square inch.
What does this quantity actually measure?
Both units measure pressure. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a pascal?
The SI unit: one newton per square metre.
What is a kilopound per square inch?
One thousand psi; the unit US steel and alloy strengths are quoted in.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Is there a quick way to do Pa to ksi in my head?
Plenty of people do this in their head: divide by 7000000.000000 instead of using the exact factor 0.000000. At 100 that shortcut gives 0.000014 kilopounds per square inch, off by 0.000000 kilopounds per square inch or about 1.50%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Pascals to kilopounds per square inch reference tables
| Pascals | Kilopounds Per Square Inch |
|---|---|
| 0.5 Pa | 7.25189e-08 ksi |
| 1 Pa | 1.45038e-07 ksi |
| 2 Pa | 2.90075e-07 ksi |
| 3 Pa | 4.35113e-07 ksi |
| 5 Pa | 7.25189e-07 ksi |
| 10 Pa | 1.45038e-06 ksi |
| 20 Pa | 2.90075e-06 ksi |
| 25 Pa | 3.62594e-06 ksi |
| 50 Pa | 7.25189e-06 ksi |
| 75 Pa | 1.08778e-05 ksi |
| 100 Pa | 1.45038e-05 ksi |
| 250 Pa | 3.62594e-05 ksi |
| 500 Pa | 7.25189e-05 ksi |
| 1000 Pa | 0.000145038 ksi |
| 5000 Pa | 0.000725189 ksi |
Exact factor: 1 pascal = 1.4503773773e-07 kilopounds per square inch.
| Quantity | Pa | ksi |
|---|---|---|
| Sea-level air | 1.013e+05 Pa | 0.0147 ksi |
| A car tyre | 2.206e+05 Pa | 0.032 ksi |
| Blood pressure, systolic | 1.6e+04 Pa | 0.00232 ksi |
| A bicycle tyre | 6.205e+05 Pa | 0.09 ksi |
| A domestic water main | 4e+05 Pa | 0.05802 ksi |
| A steam boiler | 1e+06 Pa | 0.145 ksi |
Published reference values, converted with the same factor this page uses.